code: def forward(self, inputs, device):
      x0, x1 = inputs
      return (functions.absolute_error(x0, x1),)
  
file_path: chainer/tests/chainer_tests/functions_tests/loss_tests/test_absolute_error.py
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import testing
  from chainer.testing import attr
  from chainer import utils
label_desc: Use image node_id 4 for calling the TestAbsoluteError obj's underlying member method code with example usage: obj.forward(inputs, device) and returns: functions